May 20, 2012 2:15:21 AM PDT
I'm quite a messy worker, so I cut a hole, slightly bigger, but approximately the shape of my drawing from a piece of paper and blue tack the corners to my drawing paper. I then blue tack tracing paper over the exposed parts while I'm not working on that area. No blue tack actually touches my drawing, as that could cause other problems. When I erase, as I work on a tilted drawing board, I just lift the bottom two corners and brush the crumbs away. Here's the link to my latest drawing, showing this. http://www.fivepencilmethodcommunity.com/albums/photo/view/album_id/5520/photo_id/31442